Write out error instead of panicing

[codacy-production[bot]]

Coverage summary from Codacy

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Coverage variation	Diff coverage
:white_check_mark: -0.39% (target: -1.00%)	:white_check_mark: 0.00%

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (b1205b6f7d0a723161f7c17eaf012fdc5d11ba7f) | 575 | 324 | 56.35% | | | Head commit (e7aefea58f2d6a0c1b0923d97a6ea86871fcc6f2) | 579 (+4) | 324 (+0) | 55.96% (**-0.39%**) | **Coverage variation** is the difference between the coverage for the head and common ancestor commits of the pull request branch: ` - `

Diff coverage details

| | Coverable lines | Covered lines | Diff coverage | | ------------- | ------------- | ------------- | ------------- | | Pull request (#31) | 4 | 0 | **0.00%** | **Diff coverage** is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: `/ * 100%`

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_{You may notice some variations in coverage metrics with the latest Coverage engine update. For more details, visit the documentation}